package cn.web;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dao.StudentDao;
import dao.StudentDaoI;
import entity.Student;

public class StudentServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public StudentServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	StudentDaoI sdao = new StudentDao();

	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		int pageNo = 1;// 显示的页号
		try {
			pageNo = Integer.parseInt(request.getParameter("p"));
			pageNo = pageNo < 1 ? 1 : pageNo;
		} catch (Exception e) {
		}
		String name = request.getParameter("name");
		String tele = request.getParameter("tele");
		String qq = request.getParameter("qq");
		// List<Student> list = sdao.paging(pageNo);
		List<Student> list = sdao.paging(pageNo, name, tele, qq);
		int totalPages = sdao.getTotalPage(name, tele, qq);
		request.setAttribute("list", list);
		request.setAttribute("totalPages", totalPages);
		request.setAttribute("pageNo", pageNo);
		request.setAttribute("qq", qq);

		request.getRequestDispatcher("/WEB-INF/jsp/students.jsp").forward(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to
	 * post.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("    This is ");
		out.print(this.getClass());
		out.println(", using the POST method");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException
	 *             if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
